Some causes of nail discoloration include trauma due to tight shoes, infection, and medication side effects.

You should try wearing shoes with a higher wider toe box. Get the feet inspected by a professional to determine the cause of the problem, as treatment varies depending on the diagnosis.

In brief:
Many possibilities.

Some causes of nail discoloration include trauma due to tight shoes, infection, and medication side effects.

You should try wearing shoes with a higher wider toe box. Get the feet inspected by a professional to determine the cause of the problem, as treatment varies depending on the diagnosis.
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